201111112102020 has 48 divisors (see below), whose sum is σ = 587594205797760. Its totient is φ = 51297906854656.

The previous prime is 201111112101947. The next prime is 201111112102051. The reversal of 201111112102020 is 20201211111102.

It is a happy number.

It is a super-2 number, since 2×201111112102020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72866343585 + ... + 72866346344.

It is an arithmetic number, because the mean of its divisors is an integer number (12241545954120).

Almost surely, 2^{201111112102020} is an apocalyptic number.

201111112102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201111112102020 is an abundant number, since it is smaller than the sum of its proper divisors (386483093695740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201111112102020 is a wasteful number, since it uses less digits than its factorization.

201111112102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145732689964 (or 145732689962 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201111112102020 its reverse (20201211111102), we get a palindrome (221312323213122).

The spelling of 201111112102020 in words is "two hundred one trillion, one hundred eleven billion, one hundred twelve million, one hundred two thousand, twenty".